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DRA Systems: OR-Objects 1.2.4: Interface  DistributionI
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<FONT SIZE="-1">
drasys.or.prob</FONT>
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Interface  DistributionI</H2>
<DL>
<DT><B>All Known Subinterfaces:</B> <DD><A HREF="../../../drasys/or/prob/ContinuousDistributionI.html">ContinuousDistributionI</A>, <A HREF="../../../drasys/or/prob/DiscreteDistributionI.html">DiscreteDistributionI</A></DD>
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<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../drasys/or/prob/Distribution.html">Distribution</A></DD>
</DL>
<HR>
<DL>
<DT>public interface <B>DistributionI</B></DL>

<P>
The interface used by algorithms to access all distributions.
<P>
<DL>
<DT><B>See Also: </B><DD><A HREF="../../../drasys/or/prob/BinomialDistribution.html"><CODE>BinomialDistribution</CODE></A>, 
<A HREF="../../../drasys/or/prob/PoissonDistribution.html"><CODE>PoissonDistribution</CODE></A>, 
<A HREF="../../../drasys/or/prob/EmpiricalDistribution.html"><CODE>EmpiricalDistribution</CODE></A>, 
<A HREF="../../../drasys/or/prob/DiscreteUniformDistribution.html"><CODE>DiscreteUniformDistribution</CODE></A>, 
<A HREF="../../../drasys/or/prob/UniformDistribution.html"><CODE>UniformDistribution</CODE></A>, 
<A HREF="../../../drasys/or/prob/NormalDistribution.html"><CODE>NormalDistribution</CODE></A>, 
<A HREF="../../../drasys/or/prob/ExponentialDistribution.html"><CODE>ExponentialDistribution</CODE></A>, 
<A HREF="../../../drasys/or/prob/GammaDistribution.html"><CODE>GammaDistribution</CODE></A></DL>
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<B>Method Summary</B></FONT></TD>
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<CODE>&nbsp;double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../drasys/or/prob/DistributionI.html#cdf(double)">cdf</A></B>(double&nbsp;x)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the value of the cumulative distribution function at x;</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../drasys/or/matrix/MatrixI.html">MatrixI</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../drasys/or/prob/DistributionI.html#getRandomMatrix(int, int)">getRandomMatrix</A></B>(int&nbsp;sizeOfRows,
                int&nbsp;sizeOfColumns)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a matrix of random numbers from the distribution.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../drasys/or/prob/RandomI.html">RandomI</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../drasys/or/prob/DistributionI.html#getRandomNumberGenerator()">getRandomNumberGenerator</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the random number generator.</TD>
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<CODE>&nbsp;double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../drasys/or/prob/DistributionI.html#getRandomScaler()">getRandomScaler</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a random number from the distribution.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../drasys/or/matrix/VectorI.html">VectorI</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../drasys/or/prob/DistributionI.html#getRandomVector(int)">getRandomVector</A></B>(int&nbsp;size)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a vector of random numbers from the distribution.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<CODE>&nbsp;double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../drasys/or/prob/DistributionI.html#mean()">mean</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the mean of the distribution.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<CODE>&nbsp;double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../drasys/or/prob/DistributionI.html#pdf(double)">pdf</A></B>(double&nbsp;x)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the value of the probability distribution function at x;</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<CODE>&nbsp;double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../drasys/or/prob/DistributionI.html#probability(double)">probability</A></B>(double&nbsp;x)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the probability of x.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<CODE>&nbsp;double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../drasys/or/prob/DistributionI.html#probability(double, double)">probability</A></B>(double&nbsp;x1,
            double&nbsp;x2)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the probability that x >= x1 and x <= x2.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<CODE>&nbsp;<A HREF="../../../drasys/or/matrix/MatrixI.html">MatrixI</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../drasys/or/prob/DistributionI.html#setElements(drasys.or.matrix.MatrixI)">setElements</A></B>(<A HREF="../../../drasys/or/matrix/MatrixI.html">MatrixI</A>&nbsp;matrix)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the elements in a matrix to random values from the distribution.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../drasys/or/matrix/VectorI.html">VectorI</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../drasys/or/prob/DistributionI.html#setElements(drasys.or.matrix.VectorI)">setElements</A></B>(<A HREF="../../../drasys/or/matrix/VectorI.html">VectorI</A>&nbsp;vector)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the elements in a vector to random values from the distribution.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../drasys/or/prob/DistributionI.html#setRandomNumberGenerator(drasys.or.prob.RandomI)">setRandomNumberGenerator</A></B>(<A HREF="../../../drasys/or/prob/RandomI.html">RandomI</A>&nbsp;random)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the random number generator.</TD>
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<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../drasys/or/prob/DistributionI.html#setSeed(long)">setSeed</A></B>(long&nbsp;seed)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the seed for the random number generator.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<CODE>&nbsp;double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../drasys/or/prob/DistributionI.html#std()">std</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the standard deviation of the distribution.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<CODE>&nbsp;double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../drasys/or/prob/DistributionI.html#variance()">variance</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the variance of the distribution.</TD>
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<A NAME="setSeed(long)"><!-- --></A><H3>
setSeed</H3>
<PRE>
public void <B>setSeed</B>(long&nbsp;seed)</PRE>
<DL>
<DD>Sets the seed for the random number generator.</DL>
<HR>

<A NAME="setRandomNumberGenerator(drasys.or.prob.RandomI)"><!-- --></A><H3>
setRandomNumberGenerator</H3>
<PRE>
public void <B>setRandomNumberGenerator</B>(<A HREF="../../../drasys/or/prob/RandomI.html">RandomI</A>&nbsp;random)</PRE>
<DL>
<DD>Sets the random number generator.</DL>
<HR>

<A NAME="getRandomNumberGenerator()"><!-- --></A><H3>
getRandomNumberGenerator</H3>
<PRE>
public <A HREF="../../../drasys/or/prob/RandomI.html">RandomI</A> <B>getRandomNumberGenerator</B>()</PRE>
<DL>
<DD>Gets the random number generator.</DL>
<HR>

<A NAME="getRandomScaler()"><!-- --></A><H3>
getRandomScaler</H3>
<PRE>
public double <B>getRandomScaler</B>()</PRE>
<DL>
<DD>Returns a random number from the distribution.</DL>
<HR>

<A NAME="getRandomVector(int)"><!-- --></A><H3>
getRandomVector</H3>
<PRE>
public <A HREF="../../../drasys/or/matrix/VectorI.html">VectorI</A> <B>getRandomVector</B>(int&nbsp;size)</PRE>
<DL>
<DD>Returns a vector of random numbers from the distribution.</DL>
<HR>

<A NAME="getRandomMatrix(int, int)"><!-- --></A><H3>
getRandomMatrix</H3>
<PRE>
public <A HREF="../../../drasys/or/matrix/MatrixI.html">MatrixI</A> <B>getRandomMatrix</B>(int&nbsp;sizeOfRows,
                               int&nbsp;sizeOfColumns)</PRE>
<DL>
<DD>Returns a matrix of random numbers from the distribution.</DL>
<HR>

<A NAME="setElements(drasys.or.matrix.VectorI)"><!-- --></A><H3>
setElements</H3>
<PRE>
public <A HREF="../../../drasys/or/matrix/VectorI.html">VectorI</A> <B>setElements</B>(<A HREF="../../../drasys/or/matrix/VectorI.html">VectorI</A>&nbsp;vector)</PRE>
<DL>
<DD>Set the elements in a vector to random values from the distribution.
Only the non-null elements in the vector are set.<DD><DL>
<DT><B>Returns:</B><DD>the argument 'vector'</DL>
</DD>
</DL>
<HR>

<A NAME="setElements(drasys.or.matrix.MatrixI)"><!-- --></A><H3>
setElements</H3>
<PRE>
public <A HREF="../../../drasys/or/matrix/MatrixI.html">MatrixI</A> <B>setElements</B>(<A HREF="../../../drasys/or/matrix/MatrixI.html">MatrixI</A>&nbsp;matrix)</PRE>
<DL>
<DD>Set the elements in a matrix to random values from the distribution.
Only the non-null elements in the matrix are set.<DD><DL>
<DT><B>Returns:</B><DD>the argument 'matrix'</DL>
</DD>
</DL>
<HR>

<A NAME="mean()"><!-- --></A><H3>
mean</H3>
<PRE>
public double <B>mean</B>()</PRE>
<DL>
<DD>Returns the mean of the distribution.</DL>
<HR>

<A NAME="variance()"><!-- --></A><H3>
variance</H3>
<PRE>
public double <B>variance</B>()</PRE>
<DL>
<DD>Returns the variance of the distribution.</DL>
<HR>

<A NAME="std()"><!-- --></A><H3>
std</H3>
<PRE>
public double <B>std</B>()</PRE>
<DL>
<DD>Returns the standard deviation of the distribution.</DL>
<HR>

<A NAME="pdf(double)"><!-- --></A><H3>
pdf</H3>
<PRE>
public double <B>pdf</B>(double&nbsp;x)</PRE>
<DL>
<DD>Returns the value of the probability distribution function at x;</DL>
<HR>

<A NAME="cdf(double)"><!-- --></A><H3>
cdf</H3>
<PRE>
public double <B>cdf</B>(double&nbsp;x)</PRE>
<DL>
<DD>Returns the value of the cumulative distribution function at x;</DL>
<HR>

<A NAME="probability(double)"><!-- --></A><H3>
probability</H3>
<PRE>
public double <B>probability</B>(double&nbsp;x)</PRE>
<DL>
<DD>Returns the probability of x.</DL>
<HR>

<A NAME="probability(double, double)"><!-- --></A><H3>
probability</H3>
<PRE>
public double <B>probability</B>(double&nbsp;x1,
                          double&nbsp;x2)</PRE>
<DL>
<DD>Returns the probability that x >= x1 and x <= x2.</DL>
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